maint: let gnulib provide environ

* bootstrap.conf (gnulib_modules): Add environ.
* src/env.c (environ): Delete declaration.
* src/printenv.c (environ): Likewise.
* src/stdbuf.c (environ): Likewise.
* src/su.c (environ): Likewise.

4 files changed, 0 insertions, 8 deletions

diff --git a/src/env.c b/src/env.c
index b69a29a1b..ee5e6b6ce 100644
--- a/src/env.c
+++ b/src/env.c
@@ -91,8 +91,6 @@
   proper_name ("Richard Mlynarik"), \
   proper_name ("David MacKenzie")
 
-extern char **environ;
-
 static struct option const longopts[] =
 {
   {"ignore-environment", no_argument, NULL, 'i'},
diff --git a/src/printenv.c b/src/printenv.c
index 8185da6f8..dcdcb83f3 100644
--- a/src/printenv.c
+++ b/src/printenv.c
@@ -45,8 +45,6 @@ enum { PRINTENV_FAILURE = 2 };
   proper_name ("David MacKenzie"), \
   proper_name ("Richard Mlynarik")
 
-extern char **environ;
-
 void
 usage (int status)
 {
diff --git a/src/stdbuf.c b/src/stdbuf.c
index 393071354..885356bec 100644
--- a/src/stdbuf.c
+++ b/src/stdbuf.c
@@ -39,8 +39,6 @@
 
 static char *program_path;
 
-extern char **environ;
-
 static struct
 {
   size_t size;
diff --git a/src/su.c b/src/su.c
index 0de67c95a..add100aeb 100644
--- a/src/su.c
+++ b/src/su.c
@@ -113,8 +113,6 @@
 
 char *crypt (char const *key, char const *salt);
 
-extern char **environ;
-
 static void run_shell (char const *, char const *, char **, size_t)
      ATTRIBUTE_NORETURN;